<!DOCTYPE HTML>
<html>
<head>
  <style type="text/css">
    body { margin: 0; padding: 0; }
  </style>
</head>
<body>
  <div style="width: 200px; height: 100vh"></div>
  <iframe
      src="plugin_hidden_before_scroll.html"
      id="iframe-with-plugin"
      height="40"
      width="40"
      frameBorder="0">
  </iframe>
  <div style="width: 200px; height: 100vh"></div>
</body>
</html>
